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Lexus2014–2021 Critical issues documented

Lexus NX AZ20: common faults & what to check

The AZ20 is the Lexus NX built 2021 onward. It was sold here with the 2.5 petrol, 2.5 hybrid, and 2.5 plug-in hybrid. Of the 22 faults documented for the NX, 4 apply to this generation, each with its symptoms, what to inspect and a typical repair cost. Free, no account needed.

Check this exact Lexus NX

  • Odometer history
  • Money owing
  • Reported stolen
  • Ownership history
  • Official NZ vehicle register data
  • NZ owned and operated

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22

Documented faults

Critical

Most serious

$600–$1,800

Typical repair

7

Systems covered

You're looking at the AZ20

3 engine variants are documented for this generation. Pick yours to narrow further, or keep reading for the generation as a whole.

Choose a different generation

Now narrow it to the engine

A 1.8 and a 2.4 of the same car do not fail the same way, so the faults below narrow to the engine as well as the year. Free, no account needed.

A 2022 Lexus NX is the AZ20 generation (2021 to now).

Start your free check on this Lexus NX

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Lexus NX AZ20Engine not picked yet

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Can't confirm for this car

Lexus NX · 2022

Narrowed to the year. No engine is recorded for this vehicle. Pick an engine to see which faults apply.

Tell us the engine, or check the engine code on the car, before relying on this.

  • No engine is recorded for this vehicle.

matched on year only

What to look out for

The checks worth doing on a Lexus NX before you hand over any money. Every documented fault is listed below, each with its own page.

  • Worth checking

    Try every exterior door handle several times, including after washing or rain if possible.

    See why

    Electronic door handle (e-latch) failure — doors won't open from outside

    Second-generation NX uses electronic e-latch door handles, and the exterior handle assemblies are a known weak point: water gets into the mechanism and the handle becomes rock-hard and unresponsive (worst in cold or wet conditions). Lexus has run limited service campaigns overseas (e.g. LSC 'LB3' in Canada) replacing handles with improved parts on 2022-2024 cars, and there have also been recalls for door-lock/latch behaviour. Out of any campaign, individual handle assemblies are pricey.

    What you would notice

    • Exterior door handle feels solid/jammed and won't release the door
    • Door intermittently fails to unlock via the handle sensor
    • Door ajar warnings or locks cycling on their own

    Typically $400–$1,200 to put right.

  • Worth checking

    Select reverse several times during the test drive, including right after start-up, and confirm the camera image appears immediately every time.

    See why

    Reversing camera display blank — software recall (2022-2025)

    Toyota/Lexus recalled 2022-2025 NX models because the reversing camera feed can go blank when shifting into reverse under specific conditions, which breaches safety standards and raises crash risk while backing. The remedy is a free multimedia software update (camera replacement if needed) at a Lexus dealer. Simple to fix, but an easy thing to verify has been done.

    What you would notice

    • Black or blank screen when selecting reverse
    • Camera image slow to appear or freezing

    Typically $0–$500 to put right.

  • Worth checking

    Spend five minutes using the infotainment during the test drive: pair a phone, run navigation, switch sources, use voice control.

    See why

    Infotainment and digital key glitches on early second-generation cars

    Early build 2021-2023 second-gen NX cars had teething issues with the new Lexus Interface multimedia system and phone-as-key features: screen freezes, dropped smartphone connectivity, and slow wake-ups, mostly resolved by successive software updates. Not a mechanical risk, but an un-updated car can be genuinely annoying to live with, and updates are easiest through a dealer.

    What you would notice

    • Touchscreen freezing or rebooting
    • Wireless CarPlay/Android Auto dropping out
    • Slow system start-up
    • Digital key pairing failures

    Typically $0–$300 to put right.

See all 4 issues for this oneDocumented for the exact year and engine you picked.
Electrical3

01Electronic door handle (e-latch) failure — doors won't open from outside

Try every exterior door handle several times, including after washing or rain if possible.2021 onwardElectrical
OccasionalElectrical $400–$1,200 to fix

Second-generation NX uses electronic e-latch door handles, and the exterior handle assemblies are a known weak point: water gets into the mechanism and the handle becomes rock-hard and unresponsive (worst in cold or wet conditions). Lexus has run limited service campaigns overseas (e.g. LSC 'LB3' in Canada) replacing handles with improved parts on 2022-2024 cars, and there have also been recalls for door-lock/latch behaviour. Out of any campaign, individual handle assemblies are pricey.

Symptoms to notice

  • Exterior door handle feels solid/jammed and won't release the door
  • Door intermittently fails to unlock via the handle sensor
  • Door ajar warnings or locks cycling on their own

What to check

Try every exterior door handle several times, including after washing or rain if possible. Lock and unlock the car repeatedly with the fob and via the handle touch sensors. Ask the dealer to check for any outstanding e-latch/door handle service campaigns on the VIN.

Where to look: Exterior door handles, all four doors

Ask the seller

  • “Have any door handles or latches been replaced under a service campaign?”
  • “Do all doors open reliably from outside in cold or wet weather?”

02Reversing camera display blank — software recall (2022-2025)

Select reverse several times during the test drive, including right after start-up, and confirm the camera image appears immediately every time.2021 onwardElectrical
OccasionalElectrical $0–$500 to fix

Toyota/Lexus recalled 2022-2025 NX models because the reversing camera feed can go blank when shifting into reverse under specific conditions, which breaches safety standards and raises crash risk while backing. The remedy is a free multimedia software update (camera replacement if needed) at a Lexus dealer. Simple to fix, but an easy thing to verify has been done.

Symptoms to notice

  • Black or blank screen when selecting reverse
  • Camera image slow to appear or freezing

What to check

Select reverse several times during the test drive, including right after start-up, and confirm the camera image appears immediately every time. Check the VIN for outstanding recalls at the dealer or via.

Where to look: Multimedia unit / reversing camera, centre dash and tailgate

Ask the seller

  • “Has the reversing camera recall/software update been completed?”
  • “Has the screen ever gone blank in reverse?”

03Infotainment and digital key glitches on early second-generation cars

Spend five minutes using the infotainment during the test drive: pair a phone, run navigation, switch sources, use voice control.2021 onwardElectrical
OccasionalElectrical $0–$300 to fix

Early build 2021-2023 second-gen NX cars had teething issues with the new Lexus Interface multimedia system and phone-as-key features: screen freezes, dropped smartphone connectivity, and slow wake-ups, mostly resolved by successive software updates. Not a mechanical risk, but an un-updated car can be genuinely annoying to live with, and updates are easiest through a dealer.

Symptoms to notice

  • Touchscreen freezing or rebooting
  • Wireless CarPlay/Android Auto dropping out
  • Slow system start-up
  • Digital key pairing failures

What to check

Spend five minutes using the infotainment during the test drive: pair a phone, run navigation, switch sources, use voice control. Ask when the multimedia software was last updated and whether any control units were replaced under warranty.

Where to look: Centre touchscreen / multimedia unit

Ask the seller

  • “Is the infotainment on the latest software version?”
  • “Any warranty visits for screen or connectivity problems?”
Depends on the exact engine — 1 moreDocumented for a specific engine we could not confirm from what you picked. Check the engine code on the car.
Electrical1

01NX450h+ PHEV charge port connector corrosion

Inspect the charge port opening carefully for moisture, debris, or visible corrosion on the metal pins.hybrid2021 onwardElectrical
OccasionalElectrical $600–$2,500 to fix

Can't confirm for this car

The NX450h+ plug-in hybrid charge port inlet and connector contacts are documented to suffer from moisture ingress and corrosion, particularly in the NZ and AU coastal and high-humidity climate. Corroded contacts cause unreliable charging, charge sessions that fail to start, or incomplete charge cycles. In some cases the charge port socket requires full replacement. The issue has been reported on both AC Type 2 and DC CCS charging connections.

Symptoms to notice

  • Charge session fails to initiate or stops unexpectedly mid-charge
  • Charging indicator light flashes an error pattern
  • Visible green or white corrosion on charge port pins when inspected
  • Intermittent charging that varies depending on which cable or charger is used

What to check

  1. Inspect the charge port opening carefully for moisture, debris, or visible corrosion on the metal pins.
  2. Test charging with the vehicle's own cable.
  3. Ask about any charging faults or inconsistencies.
  4. Check for any Lexus-issued software or hardware updates for the charge port.

Where to look: Charge port inlet on the front quarter panel (NX450h+ body)

Parts involved: Body corrosion.

Ask the seller

  • “Has charging ever been unreliable or failed to start?”
  • “Has the charge port or cable been replaced or serviced?”
  • “How often is the PHEV charged and using what type of charger — home AC or public DC?”
Other Lexus NX engines and years18 documented issues that do not apply to the one you picked.
Engine, transmission & cooling7

018AR-FTS Excessive Oil Consumption

Pull the dipstick and compare actual oil level to the level expected given the last service date.petrol2015–2021Engine
OccasionalEngine $3,500–$8,000 to fix

Does not apply

A subset of NX 2.0T owners have documented oil consumption of 0.5–1.5 litres per 1,000 km with no external leaks, attributed to piston ring flutter under light-load direct-injection combustion conditions causing blow-by, and to valve stem seal degradation. Toyota/Lexus investigated and released revised piston ring specifications for some build dates but did not issue a broad recall. Owners who do not monitor oil levels between services risk running low enough to accelerate bearing and timing chain wear.

Symptoms to notice

  • Oil level dropping below minimum between scheduled services without any visible external leak
  • Faint blue smoke from exhaust on start-up or under light load
  • Burning oil smell from the exhaust after extended highway driving
  • Oil residue or fouling inside the intake hose from crankcase ventilation
  • Spark plug electrodes coated with oily residue on inspection

What to check

  1. Pull the dipstick and compare actual oil level to the level expected given the last service date.
  2. Check for blue smoke from the exhaust on a cold start or at light throttle.
  3. Inspect the inside of the oil filler cap for white sludge (indicating short trips) and the air filter housing for oil vapour residue.

Where to look: Internal engine — piston rings and valve stem seals

Parts involved: Timing chain.

Ask the seller

  • “Have you ever needed to top up the engine oil between scheduled services, and if so how often?”
  • “Has the dealer or a technician investigated oil consumption and what was the outcome?”
  • “Has the car been on a short-trip or urban duty cycle that might mask consumption through PCV recirculation?”

02E-CVT Judder and Low-Speed Vibration (NX300h Hybrid)

Test drive from fully cold at low speeds under light throttle.hybrid2014–2021Transmission
OccasionalTransmission $600–$5,500 to fix

Does not apply

The NX300h hybrid uses a 2AR-FXE power-split e-CVT transaxle. A proportion of NX300h vehicles develop a shudder felt at low speeds (10–40 km/h) during light acceleration, attributed to torque transition behaviour at the motor-generator power-split boundary. The condition is exacerbated by degraded hybrid transaxle fluid. Coolant contamination of the transaxle fluid – from a failed internal seal – can cause more severe judder and internal damage. A transaxle fluid service is typically the first repair step.

Symptoms to notice

  • Shudder or vibration felt through the floor at 10–40 km/h under light acceleration
  • Symptom most pronounced during the transition from electric-only to combined drive
  • Transmission warning light in more severe cases

What to check

  1. Test drive from fully cold at low speeds under light throttle.
  2. Note any shudder during initial pull-away.
  3. Request hybrid transaxle fluid service history.
  4. Scan for hybrid system fault codes including MG1 and MG2 motor generator codes.
  5. Check for any coolant odour from the transaxle area.

Where to look: Hybrid transaxle integrated with the front electric motor, mounted on the front subframe beneath the engine bay

Ask the seller

  • “Has the hybrid transaxle fluid been changed?”
  • “Have you noticed any shudder or vibration when pulling away at low speeds?”
  • “Has a transmission warning light ever appeared?”

03AC60F Torque Converter Clutch Shudder

Drive the vehicle at 40-60 km/h on a smooth road under very light throttle and check for vibration through the seat or floor.petrol2014–2021TransmissionRead the full fault: symptoms, where to look, what to ask the seller

048AR-FTS Timing Chain Tensioner Cold Rattle

Cold-start the engine and listen carefully at the front timing cover for rattle duration.petrol2014–2021EngineRead the full fault: symptoms, where to look, what to ask the seller

058AR-FTS Engine-Driven Water Pump Failure and Coolant Leak

Check for coolant residue or white mineral deposits on the timing cover area at the front of the engine.petrol2015–2021Cooling
OccasionalCooling $1,200–$2,800 to fix

Does not apply

The 8AR-FTS uses a conventional mechanically driven water pump whose impeller is plastic-bonded to a metal hub; the bond degrades under thermal cycling, causing the impeller to spin freely without moving coolant. Owners and technicians also report the pump weep hole leaking externally. Because the pump sits inside the timing cover area, replacement requires partial disassembly of the timing chain front end, making it a significant labour job.

Symptoms to notice

  • Coolant temperature gauge rising above normal operating range, particularly in slow traffic
  • Coolant loss with no visible external puddle — leaks burn off or drip internally
  • White residue or staining on the front face of the timing cover
  • Overheating warning light in advanced cases
  • Heater output weakening when engine is at operating temperature

What to check

  1. Check for coolant residue or white mineral deposits on the timing cover area at the front of the engine.
  2. Monitor the coolant temperature gauge on the test drive for any creep above the normal mid-scale position.
  3. Inspect coolant level and look for discolouration or oil contamination in the reservoir.

Where to look: Engine timing cover, front centre of engine bay

Parts involved: Water pump.

Ask the seller

  • “Has the water pump ever been replaced, and was it done with a genuine Toyota/Lexus metal-impeller pump or an OEM upgrade?”
  • “Has the car ever overheated or has the temperature gauge moved above the normal centre position?”
  • “Are there any coolant leaks visible under the bonnet or has coolant been topped up between services?”

068AR-FTS HPFP Cam Follower Wear

Scan for P0087 and P0191 fuel pressure codes before and after a drive.petrol2014–2021Engine
OccasionalEngine $500–$1,800 to fix

Does not apply

The 8AR-FTS high-pressure fuel pump is mechanically actuated by a dedicated lobe on the exhaust camshaft via a roller cam follower. At high mileage, typically above 120,000 km, the roller or its retaining pin can wear, reducing pump stroke and rail pressure, particularly under high engine loads. This triggers P0087 (fuel rail pressure too low) and P0191 fault codes. Hard starting, hesitation under full throttle, and rough running result. Advanced cam follower wear can damage the follower bore in the cylinder head, substantially escalating repair costs beyond follower and pump replacement alone.

Symptoms to notice

  • P0087 fuel rail pressure low or P0191 fuel pressure sensor fault codes stored
  • Hard starting, especially hot restart after a short soak
  • Hesitation or stumble under full throttle acceleration at higher rpm
  • Rough running at idle that worsens with engine load
  • Check engine light illuminated with fuel pressure related codes

What to check

Scan for P0087 and P0191 fuel pressure codes before and after a drive. If accessible after pump removal, inspect the HPFP cam follower bore for roller wear, scoring, or pitting. Scrutinise vehicles above 120,000 km without any documented fuel system inspection. If a workshop inspection is possible: Check fuel pressure at idle and under load via live data on a scan tool.

Where to look: Rear of cylinder head, high-pressure fuel pump mount and exhaust camshaft drive lobe

Parts involved: High-pressure fuel pump.

Ask the seller

  • “Has the high-pressure fuel pump or cam follower been inspected or replaced?”
  • “Have any fuel pressure or check engine fault codes been stored?”
  • “Has the vehicle experienced hard hot-starts or hesitation under hard acceleration?”
  • “What is the total mileage and has the fuel system been serviced at any point?”

07Fuel pump replacement recall VGG05 — stall risk (NX200t/NX300/NX300h)

Check the VIN against the Lexus Australia / NZ recall database and confirm campaign VGG05 (fuel pump) is marked complete.2014–2021Engine
OccasionalEngine $0–$1,200 to fix

Does not apply

First-generation NX vehicles in Australia and NZ are covered by safety recall campaign VGG05 for the same defective Denso fuel pump that hit many Toyota/Lexus models: the pump can stop working, the engine runs rough and can stall at speed with no restart. Lexus Australia listed over 11,000 affected vehicles and replaces the pump free of charge. The gen-1 NX otherwise has a genuinely strong reliability record, so recall completion is the main paperwork check.

Symptoms to notice

  • Engine warning lights and rough running
  • Engine stall while driving
  • No-restart after a stall
  • Long cranking when hot

What to check

  1. Check the VIN against the Lexus Australia / NZ recall database and confirm campaign VGG05 (fuel pump) is marked complete.
  2. Ask for the dealer paperwork.
  3. On the test drive include some low-speed running and idling in traffic conditions.

Where to look: In-tank fuel pump, under the rear seat

Ask the seller

  • “Has recall VGG05 (fuel pump) been completed?”
  • “Has the engine ever cut out or stalled?”
Electrical6

01NX300h hybrid inverter coolant pump failure

With the vehicle in Ready mode (not full ICE running), listen near the inverter coolant reservoir for the electric pump hum.hybrid2014–2021ElectricalRead the full fault: symptoms, where to look, what to ask the seller

02Hybrid E-Four Rear Electric Drive Unit Fault (AWD Models)

Confirm the vehicle is an AWD variant.hybrid2014–2021Electrical
OccasionalElectrical $2,500–$7,500 to fix

Does not apply

On NX hybrid AWD variants the rear axle is driven by a dedicated electric motor and reduction gear unit (Lexus E-Four system) with no mechanical connection to the front drivetrain. The rear motor power electronics and motor windings can develop insulation faults or bearing failure, flagging as an AWD system fault with power reduction. In some cases the entire rear drive unit requires replacement as it is not field-serviceable; the repair is expensive given the unit cost and the floor panel access required.

Symptoms to notice

  • AWD system warning light or VSC/TRAC warning illuminating on the instrument cluster
  • System defaults to front-wheel drive only with power reduced due to rear motor fault
  • Whining, humming, or grinding noise from the rear axle area at low speeds
  • DTC codes related to rear motor control module or inverter (hybrid system fault tree)
  • Reduced traction on wet or loose surfaces where rear drive contribution was previously felt

What to check

  1. Confirm the vehicle is an AWD variant.
  2. Check whether any AWD system warning lights or traction fault codes are stored.
  3. On a loose or wet surface, confirm the rear wheels contribute to drive — a scanner showing rear motor current draw confirms the unit is active.
  4. Check for any whining or humming from the rear drivetrain area at low speeds on a quiet road.

Where to look: Rear axle under the boot floor — E-Four rear electric motor and reduction gear assembly

Ask the seller

  • “Has the AWD system warning light ever illuminated and what was the diagnosis?”
  • “Has the rear E-Four drive unit ever been inspected, repaired, or replaced?”
  • “Is there any noise from the rear of the car when driving slowly in a quiet car park that might indicate rear motor bearing wear?”

03Hybrid Transaxle MG2 Resolver Fault

Inspect the hybrid transaxle wiring harness under the vehicle for signs of moisture ingress or chafing near the connector.hybrid2014–2021Electrical
OccasionalElectrical $1,500–$4,500 to fix

Does not apply

The AYZ15 NX 300h hybrid transaxle contains Motor Generator 2 (MG2), which delivers primary traction drive. The resolver, a rotary position sensor embedded in the MG2 stator assembly, can develop fault conditions due to winding degradation or connector moisture ingress over time. Failure triggers P3190 or related hybrid system codes, illuminating the hybrid system warning triangle and traction control lights simultaneously. The vehicle may enter limited power mode or refuse to enter READY mode. Resolver replacement requires partial transaxle disassembly and specialist hybrid tooling unavailable at general workshops.

Symptoms to notice

  • Hybrid system warning triangle on instrument cluster
  • Traction control warning light illuminated at the same time as hybrid triangle
  • Reduced power or limp-home mode with limited acceleration
  • P3190, P3105, or P325x fault codes stored in hybrid ECU
  • Vehicle may fail to enter READY mode in severe cases

What to check

  1. Inspect the hybrid transaxle wiring harness under the vehicle for signs of moisture ingress or chafing near the connector.
  2. Confirm the vehicle enters READY mode normally and that EV driving operates without warning lights during a test drive.
  3. If a workshop inspection is possible: Use a Toyota/Lexus-compatible scan tool to check for hybrid system fault codes, particularly P3190 and P325x series.

Where to look: Hybrid transaxle MG2 resolver, underbody centre beneath firewall area

Ask the seller

  • “Has the hybrid system warning light or triangle ever appeared?”
  • “Has the vehicle ever entered limp mode or limited power mode?”
  • “Has any hybrid transaxle work been carried out?”
  • “Can the vehicle be scanned for hybrid fault codes before purchase?”

04NX300h hybrid battery ageing on early cars

Watch the hybrid energy screen during the test drive for rapid charge/discharge swings.hybrid2014–2021Electrical
OccasionalElectrical $2,500–$4,500 to fix

Does not apply

The NX300h shares Toyota's proven NiMH hybrid hardware and failures are rare, but the earliest 2014-2016 cars are now past 10 years old, which is when packs start to show degradation — particularly high-mileage ex-fleet cars. A tired pack shows as erratic charge behaviour and worsening economy before it triggers a fault. NZ hybrid specialists offer reconditioned and replacement packs well below dealer pricing, so it is manageable if priced in.

Symptoms to notice

  • Hybrid system warning light
  • State-of-charge gauge swinging rapidly
  • Fuel economy noticeably worse than ~6 L/100km expected
  • Petrol engine rarely shutting off

What to check

  1. Watch the hybrid energy screen during the test drive for rapid charge/discharge swings.
  2. Ask for a hybrid battery health report (cheap at a Lexus dealer or hybrid specialist).
  3. Check whether the battery cooling vent (under/beside the rear seat) is clear of dust and pet hair — blocked vents cook packs.

Where to look: Hybrid battery under the rear seats / boot floor

Ask the seller

  • “Can you provide a recent hybrid battery health check?”
  • “Has the hybrid battery cooling fan/filter ever been cleaned?”

05Hybrid 12V Auxiliary Battery Failure Causing No-Start

Ask when the 12V auxiliary battery was last replaced — if over 4 years or unknown it should be treated as a near-term cost.hybrid2014–2021ElectricalRead the full fault: symptoms, where to look, what to ask the seller

06Remote Touch Interface (RTI) Trackpad Controller Failure

On the test drive, navigate through several infotainment menus using only the centre console RTI trackpad.2014–2021Electrical
CommonElectrical $700–$1,800 to fix

Does not apply

The NX uses Lexus's Remote Touch Interface — a haptic trackpad in the centre console — to control the infotainment, navigation, and climate menus. The trackpad unit is a known weak point: the internal sensor degrades over time causing erratic cursor movement, complete unresponsiveness, or a permanently stuck input that makes the screen unusable. The failure appears hardware-driven (not software-flashable) and requires replacement of the RTI unit, which is dealer-only sourced and often expensive.

Symptoms to notice

  • Cursor on infotainment screen drifts or moves erratically without touching the trackpad
  • Trackpad completely unresponsive — screen cursor does not move at all
  • Screen input becomes sluggish or registers incorrect menu selections
  • Trackpad click has no tactile response or registers phantom clicks
  • Infotainment screen frozen on a menu because stuck trackpad input holds a selection

What to check

  1. On the test drive, navigate through several infotainment menus using only the centre console RTI trackpad.
  2. Test cursor accuracy, click-to-select response, and the scroll function.
  3. Check whether the cursor moves without being touched (stuck input) and confirm the tactile feedback click functions correctly.
  4. Verify audio volume knob and shortcut buttons adjacent to the trackpad work independently.

Where to look: Centre console between front seats — Remote Touch Interface trackpad unit

Ask the seller

  • “Does the centre console trackpad work accurately and consistently to control the infotainment system?”
  • “Has the Remote Touch Interface or any part of the infotainment system been replaced or repaired?”
  • “Is the cursor ever moving on screen without you touching the pad, or does it ever refuse to move at all?”
Body, brakes, suspension & interior5

01Front lower control arm ball joint wear

Inspect rubber boots for cracking or grease loss.2014–2021Suspension
CommonSuspension $900–$2,200 to fix

Does not apply

The NX AZ10 front lower control arm ball joints are susceptible to premature wear, particularly on vehicles with higher mileage or those driven on rough NZ roads and chip-seal. Worn ball joints introduce vague steering and clunking over bumps and can cause irregular tyre wear. In severe cases a failed ball joint is a loss-of-control risk. Replacement typically requires the full lower arm assembly as the joint is not separately serviceable on most variants.

The front wheel of a car splayed outward with the lower control arm hanging down after a ball joint separation.Example of the part — not this vehicle

A separated lower ball joint: the control arm has dropped and the wheel has splayed out under the guard.

Elfix · CC0 · Wikimedia Commons

Symptoms to notice

  • Clunking or knocking from the front suspension over bumps or rough road
  • Vague or wandering steering feel
  • Uneven front tyre wear — particularly outer edge
  • Vibration through the steering wheel at low speed

What to check

  1. Inspect rubber boots for cracking or grease loss.
  2. Test drive over speed bumps and listen for clunks from the front suspension corners.
  3. If a workshop inspection is possible: Lift the front of the vehicle and check for vertical and horizontal play in each front lower ball joint.

Where to look: Front lower control arm — ball joint at the outboard end connecting to the steering knuckle

Parts involved: Ball joint.

Ask the seller

  • “Has the front suspension been inspected or any components replaced?”
  • “Does the vehicle pull to one side or feel vague in steering?”
  • “Has any clunking from the front been noticed over bumps?”

02Front Lower Arm Inner Bush Failure

Any visible bush movement or audible clunk confirms failure.2014–2021SuspensionRead the full fault: symptoms, where to look, what to ask the seller

03Front Wheel Bearing Premature Wear

During a test drive at 80+ km/h, perform gentle lane changes and note any change in drone frequency.2014–2021Suspension
CommonSuspension $350–$750 to fix

Does not apply

NX models, particularly AWD variants, report premature front wheel bearing failure, often before 100,000 km. Bearings are sealed hub units requiring full hub assembly replacement. NZ and AU driving conditions including gravel roads, potholed urban streets, and kerb strikes accelerate degradation. The failure presents as a droning or rumbling noise from one front corner that changes pitch during steering input as lateral load transfers on and off the bearing.

Symptoms to notice

  • Droning or rumbling from one front corner varying in pitch with vehicle speed
  • Noise changes character when steering wheel is turned left or right at speed
  • Vibration felt through the steering wheel at highway speeds

What to check

During a test drive at 80+ km/h, perform gentle lane changes and note any change in drone frequency. Spin the wheel by hand and listen for roughness or grinding. If a workshop inspection is possible: With the vehicle on a hoist, rock each front wheel top-to-bottom and side-to-side to check for bearing play.

Where to look: Front hub and bearing assembly at each front wheel, housed inside the steering knuckle

Parts involved: Wheel bearing.

Ask the seller

  • “Have the front wheel bearings been inspected or replaced?”
  • “Is there any droning from the front wheels at motorway speeds?”
  • “Has the vehicle been used regularly on unsealed or gravel roads?”

04Skid control ECU / brake hold recall CGG83 (NX200t, NX300h)

Verify on the VIN that recall CGG83 (skid control ECU reprogram) is complete.2014–2021Brakes
OccasionalBrakes $0–$300 to fix

Does not apply

Recall campaign CGG83 covers NX200t (AGZ10/15) and NX300h (AYZ10/15) for improper skid-control ECU programming: when the automatic Brake Hold system deactivates under certain conditions, the parking brake may not apply as designed and the vehicle can creep forward. The fix is a free ECU reprogram at a Lexus dealer. It is a software fix — quick, but worth confirming it was actually done, especially on imports.

Symptoms to notice

  • Vehicle creeps when Brake Hold releases unexpectedly
  • Parking brake not engaging automatically as expected
  • Usually no symptoms — a paperwork check

What to check

Verify on the VIN that recall CGG83 (skid control ECU reprogram) is complete. In the car, test the Brake Hold function on a slope: activate it, come to a stop, and confirm the car holds firmly and applies the parking brake when you switch off.

Where to look: Skid control ECU — software update, no physical part

Ask the seller

  • “Has recall CGG83 been carried out?”
  • “Does the auto Brake Hold system work correctly on hills?”

05Heated Seat Heating Element Failure

The front seat heating elements in the NX are embedded in both the seat base cushion and backrest.2014–2021Interior
CommonInterior $450–$1,100 to fix

Does not apply

The front seat heating elements in the NX are embedded in both the seat base cushion and backrest; the resistive wire elements are prone to local fracture at flex points where occupant movement repeatedly stresses the element, causing one zone or the entire seat to stop generating heat. The failure is typically one-sided or zone-specific, with the seat switch light still illuminating, suggesting the fault lies in the element rather than the control module. Repair requires seat upholstery disassembly to replace the element pad.

Symptoms to notice

  • Seat heater indicator light activates normally but no warmth is produced in the seat or backrest
  • Partial heat — one zone (base or back) works while the other does not
  • Heat noticeably weaker on one side compared to the other front seat
  • Element fault code stored in the body control module for heated seat circuit
  • Intermittent operation — works when cold, stops when element expands with heat

What to check

  1. On a cold day, activate both driver and passenger heated seats to the maximum setting and confirm heat is felt in both the seat base and backrest within 2-3 minutes.
  2. Check both sides of the vehicle.
  3. Note whether the seat indicator light illuminates even when no heat is produced — this points to element failure rather than switch or fuse.

Where to look: Driver and front passenger seat cushion and backrest, embedded heating elements

Ask the seller

  • “Do both front heated seats produce heat evenly across both the base and backrest when activated?”
  • “Has either seat heater ever been repaired or had the element replaced?”
  • “Were the seat heaters covered under warranty and if so what was the outcome?”

What these repairs cost on other cars

Some of the Lexus NX’s documented faults are repairs other models share. Each page lists the documented NZ cost for every model it affects.

Other Lexus models

Lexus IS41 documented faultsLexus RX21 documented faultsLexus GS19 documented faultsLexus UX16 documented faultsLexus ES12 documented faultsLexus LS12 documented faults

Lexus NX buyer questions

Is the Lexus NX reliable?

Like any used car, it depends on the specific example and its service history. Across the 22 documented faults for the Lexus NX, the recurring problem areas are electrical, engine, and transmission. A Lexus NX with a full service history and no signs of the issues listed on this page can be a sound buy but each one needs to be checked individually before you commit.

What are the most common problems with a used Lexus NX?

We've catalogued 22 known faults for the Lexus NX, covering electrical, engine, and transmission. All 22 are written out in full on this page, with the symptoms to notice, what to inspect, and typical repair costs for each. Free to read, no account needed.

How much do repairs cost on a Lexus NX?

Most single repairs on the Lexus NX fall between $600–$1,800 at NZ independent-workshop rates. Some of the 22 documented faults cost less and a few cost considerably more, and no one car needs them all. Knowing which ones to look for before you view is what lets you negotiate the price down or walk away.

Should I get a pre-purchase inspection on a Lexus NX?

Yes. A Lexus NX inspection focused on its known weak points is the single best way to avoid an expensive mistake. KickTyres gives you a guided, model-specific inspection plus a market valuation and negotiation figure for $24.90 far less than the cost of missing one of the faults on this page.